54 THE AGARICACEAE OF MICHIGAN 



**Pileus glabrous; veil lacking. 



20. Lentinus umbilicatus Pk. 



N. Y. State Mus. Rep. 28, 1876. 

 Illustration : Ibid, Plate I, Fig. 15-19. 



PILEUS 1-2 cm. broad, tough, convex, ivith a deep umbilicus 

 hygrophanous, water-brown, (moist), fading, glabrous, even. FLESH 

 tbin. GILLS adnate or slightly decurrent, close, broadest behind, 

 narrower in front, whitish, edge serrate. STEM l-2A/ 2 cm. long, 

 2-3 mm. thick, equal or tapering upward, glabrous, stuffed or hol- 

 low, tough, slightly wrinkled or lactulose, central or eccentric, 

 concolor or paler. SPOKES broadly elliptical, 6x3.5-4 micr., 

 smooth, white. ODOR none. TASTE tardily acrid. 



Gregarious. On the ground, among leaves, in mixed woods of 

 pine, beech, etc. New Richmond. September. Rare. 



This little Lentinus has the habit of a Clitocybe. Our specimens 

 had a central stem and grew from the ground. It is, however, said 

 to grow on wood, where it has an eccentric stem. Its serrate gills 

 and tough texture separate it from Clitocybe. It is close to L. ompha- 

 lodes Fr. and may be its American form. 



21. Lentinus haematopus Berk. 

 Grevillea, 1872. 



PILEUS 2-5 cm. broad, orbicular or wider than long, sometimes 

 lobed, umbilicate or depressed, pale or sordid yellow, glabrous, even. 

 FLESH tough, whitish, tinged yellow, thin. GILLS decurrent, nar- 

 row, subdistant, white to dull yellowish, edge toothed to nearly 

 entire. STEM short, 4-6 mm. long, 2-4 mm. thick, eccentric to sub- 

 lateral, firm, glabrous blood-red or reddish. SPORES oblong-ellip- 

 tical, inequilateral, 7-9 x 3 micr., smooth, white. CYSTIDIA none. 

 ODOR aromatic-pleasant. TASTE bitterish. 



Solitary. On wood. Ishpeming. August. Rare. 



The specimen from which most of the above description was 

 made, was sent to Peck who identified it as this species. It was 

 first sent to Berkeley from an unknown locality in North America. 

 Peck reports it twice from New York. In our plant the pileus is 

 laterally extended on the short sublateral stem, and the gills and 



